1 files changed, 640 insertions, 0 deletions

diff --git a/minuitwrp/events.c b/minuitwrp/events.c
new file mode 100644
index 000000000..52c5a7d50
--- /dev/null
+++ b/minuitwrp/events.c
@@ -0,0 +1,640 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/poll.h>
+#include <limits.h>
+
+#include <linux/input.h>
+
+#include "../common.h"
+
+#include "minui.h"
+
+//#define _EVENT_LOGGING
+
+#define MAX_DEVICES         16
+
+#define VIBRATOR_TIMEOUT_FILE	"/sys/class/timed_output/vibrator/enable"
+#define VIBRATOR_TIME_MS    50
+
+#define SYN_REPORT          0x00
+#define SYN_CONFIG          0x01
+#define SYN_MT_REPORT       0x02
+
+#define ABS_MT_POSITION     0x2a /* Group a set of X and Y */
+#define ABS_MT_AMPLITUDE    0x2b /* Group a set of Z and W */
+#define ABS_MT_SLOT         0x2f
+#define ABS_MT_TOUCH_MAJOR  0x30
+#define ABS_MT_TOUCH_MINOR  0x31
+#define ABS_MT_WIDTH_MAJOR  0x32
+#define ABS_MT_WIDTH_MINOR  0x33
+#define ABS_MT_ORIENTATION  0x34
+#define ABS_MT_POSITION_X   0x35
+#define ABS_MT_POSITION_Y   0x36
+#define ABS_MT_TOOL_TYPE    0x37
+#define ABS_MT_BLOB_ID      0x38
+#define ABS_MT_TRACKING_ID  0x39
+#define ABS_MT_PRESSURE     0x3a
+#define ABS_MT_DISTANCE     0x3b
+
+enum {
+    DOWN_NOT,
+    DOWN_SENT,
+    DOWN_RELEASED,
+};
+
+struct virtualkey {
+    int scancode;
+    int centerx, centery;
+    int width, height;
+};
+
+struct position {
+    int x, y;
+    int synced;
+    struct input_absinfo xi, yi;
+};
+
+struct ev {
+    struct pollfd *fd;
+
+    struct virtualkey *vks;
+    int vk_count;
+
+    char deviceName[64];
+
+    int ignored;
+
+    struct position p, mt_p;
+    int down;
+};
+
+static struct pollfd ev_fds[MAX_DEVICES];
+static struct ev evs[MAX_DEVICES];
+static unsigned ev_count = 0;
+
+static inline int ABS(int x) {
+    return x<0?-x:x;
+}
+
+int vibrate(int timeout_ms)
+{
+    char str[20];
+    int fd;
+    int ret;
+
+    fd = open(VIBRATOR_TIMEOUT_FILE, O_WRONLY);
+    if (fd < 0)
+        return -1;
+
+    ret = snprintf(str, sizeof(str), "%d", timeout_ms);
+    ret = write(fd, str, ret);
+    close(fd);
+
+    if (ret < 0)
+       return -1;
+
+    return 0;
+}
+
+/* Returns empty tokens */
+static char *vk_strtok_r(char *str, const char *delim, char **save_str)
+{
+    if(!str)
+    {
+        if(!*save_str)
+            return NULL;
+
+        str = (*save_str) + 1;
+    }
+    *save_str = strpbrk(str, delim);
+
+    if (*save_str)
+        **save_str = '\0';
+
+    return str;
+}
+
+static int vk_init(struct ev *e)
+{
+    char vk_path[PATH_MAX] = "/sys/board_properties/virtualkeys.";
+    char vks[2048], *ts = NULL;
+    ssize_t len;
+    int vk_fd;
+    int i;
+
+    e->vk_count = 0;
+
+    len = strlen(vk_path);
+    len = ioctl(e->fd->fd, EVIOCGNAME(sizeof(e->deviceName)), e->deviceName);
+    if (len <= 0)
+    {
+        LOGE("Unable to query event object.\n");
+        return -1;
+    }
+#ifdef _EVENT_LOGGING
+    LOGI("Event object: %s\n", e->deviceName);
+#endif
+
+    // Blacklist these "input" devices
+    if (strcmp(e->deviceName, "bma250") == 0)
+    {
+        e->ignored = 1;
+    }
+
+    strcat(vk_path, e->deviceName);
+
+    // Some devices split the keys from the touchscreen
+    e->vk_count = 0;
+    vk_fd = open(vk_path, O_RDONLY);
+    if (vk_fd >= 0)
+    {
+        len = read(vk_fd, vks, sizeof(vks)-1);
+        close(vk_fd);
+        if (len <= 0)
+            return -1;
+    
+        vks[len] = '\0';
+    
+        /* Parse a line like:
+            keytype:keycode:centerx:centery:width:height:keytype2:keycode2:centerx2:...
+        */
+        for (ts = vks, e->vk_count = 1; *ts; ++ts) {
+            if (*ts == ':')
+                ++e->vk_count;
+        }
+
+        if (e->vk_count % 6) {
+            LOGW("minui: %s is %d %% 6\n", vk_path, e->vk_count % 6);
+        }
+        e->vk_count /= 6;
+        if (e->vk_count <= 0)
+            return -1;
+
+        e->down = DOWN_NOT;
+    }
+
+    ioctl(e->fd->fd, EVIOCGABS(ABS_X), &e->p.xi);
+    ioctl(e->fd->fd, EVIOCGABS(ABS_Y), &e->p.yi);
+    e->p.synced = 0;
+#ifdef _EVENT_LOGGING
+    LOGI("EV: ST minX: %d  maxX: %d  minY: %d  maxY: %d\n", e->p.xi.minimum, e->p.xi.maximum, e->p.yi.minimum, e->p.yi.maximum);
+#endif
+
+    ioctl(e->fd->fd, EVIOCGABS(ABS_MT_POSITION_X), &e->mt_p.xi);
+    ioctl(e->fd->fd, EVIOCGABS(ABS_MT_POSITION_Y), &e->mt_p.yi);
+    e->mt_p.synced = 0;
+#ifdef _EVENT_LOGGING
+    LOGI("EV: MT minX: %d  maxX: %d  minY: %d  maxY: %d\n", e->mt_p.xi.minimum, e->mt_p.xi.maximum, e->mt_p.yi.minimum, e->mt_p.yi.maximum);
+#endif
+
+    e->vks = malloc(sizeof(*e->vks) * e->vk_count);
+
+    for (i = 0; i < e->vk_count; ++i) {
+        char *token[6];
+        int j;
+
+        for (j = 0; j < 6; ++j) {
+            token[j] = vk_strtok_r((i||j)?NULL:vks, ":", &ts);
+        }
+
+        if (strcmp(token[0], "0x01") != 0) {
+            /* Java does string compare, so we do too. */
+            LOGW("minui: %s: ignoring unknown virtual key type %s\n", vk_path, token[0]);
+            continue;
+        }
+
+        e->vks[i].scancode = strtol(token[1], NULL, 0);
+        e->vks[i].centerx = strtol(token[2], NULL, 0);
+        e->vks[i].centery = strtol(token[3], NULL, 0);
+        e->vks[i].width = strtol(token[4], NULL, 0);
+        e->vks[i].height = strtol(token[5], NULL, 0);
+    }
+
+    return 0;
+}
+
+int ev_init(void)
+{
+    DIR *dir;
+    struct dirent *de;
+    int fd;
+
+	dir = opendir("/dev/input");
+    if(dir != 0) {
+        while((de = readdir(dir))) {
+//            fprintf(stderr,"/dev/input/%s\n", de->d_name);
+            if(strncmp(de->d_name,"event",5)) continue;
+            fd = openat(dirfd(dir), de->d_name, O_RDONLY);
+            if(fd < 0) continue;
+
+			ev_fds[ev_count].fd = fd;
+            ev_fds[ev_count].events = POLLIN;
+            evs[ev_count].fd = &ev_fds[ev_count];
+
+            /* Load virtualkeys if there are any */
+			vk_init(&evs[ev_count]);
+
+            ev_count++;
+            if(ev_count == MAX_DEVICES) break;
+        }
+    }
+
+    return 0;
+}
+
+void ev_exit(void)
+{
+    while (ev_count-- > 0) {
+	if (evs[ev_count].vk_count) {
+		free(evs[ev_count].vks);
+		evs[ev_count].vk_count = 0;
+	}
+        close(ev_fds[ev_count].fd);
+    }
+}
+
+static int vk_inside_display(__s32 value, struct input_absinfo *info, int screen_size)
+{
+    int screen_pos;
+
+    if (info->minimum == info->maximum)
+        return 0;
+
+    screen_pos = (value - info->minimum) * (screen_size - 1) / (info->maximum - info->minimum);
+    return (screen_pos >= 0 && screen_pos < screen_size);
+}
+
+static int vk_tp_to_screen(struct position *p, int *x, int *y)
+{
+    if (p->xi.minimum == p->xi.maximum || p->yi.minimum == p->yi.maximum)
+    {
+        // In this case, we assume the screen dimensions are the same.
+        *x = p->x;
+        *y = p->y;
+        return 0;
+    }
+
+#ifdef _EVENT_LOGGING
+    LOGI("EV: p->x=%d  x-range=%d,%d  fb-width=%d\n", p->x, p->xi.minimum, p->xi.maximum, gr_fb_width());
+#endif
+
+#ifndef RECOVERY_TOUCHSCREEN_SWAP_XY
+    int fb_width = gr_fb_width();
+    int fb_height = gr_fb_height();
+#else
+    // We need to swap the scaling sizes, too
+    int fb_width = gr_fb_height();
+    int fb_height = gr_fb_width();
+#endif
+
+    *x = (p->x - p->xi.minimum) * (fb_width - 1) / (p->xi.maximum - p->xi.minimum);
+    *y = (p->y - p->yi.minimum) * (fb_height - 1) / (p->yi.maximum - p->yi.minimum);
+
+    if (*x >= 0 && *x < fb_width &&
+        *y >= 0 && *y < fb_height)
+    {
+        return 0;
+    }
+
+    return 1;
+}
+
+/* Translate a virtual key in to a real key event, if needed */
+/* Returns non-zero when the event should be consumed */
+static int vk_modify(struct ev *e, struct input_event *ev)
+{
+    static int downX = -1, downY = -1;
+    static int discard = 0;
+    static int lastWasSynReport = 0;
+    static int touchReleaseOnNextSynReport = 0;
+    int i;
+    int x, y;
+
+    // This is used to ditch useless event handlers, like an accelerometer
+    if (e->ignored)     return 1;
+
+    if (ev->type == EV_REL && ev->code == REL_Z)
+    {
+        // This appears to be an accelerometer or another strange input device. It's not the touchscreen.
+#ifdef _EVENT_LOGGING
+        LOGI("EV: Device disabled due to non-touchscreen messages.\n");
+#endif
+        e->ignored = 1;
+        return 1;
+    }
+
+#ifdef _EVENT_LOGGING
+    LOGI("EV: %s => type: %x  code: %x  value: %d\n", e->deviceName, ev->type, ev->code, ev->value);
+#endif
+
+	// Handle keyboard events, value of 1 indicates key down, 0 indicates key up
+	if (ev->type == EV_KEY) {
+		return 0;
+	}
+
+    if (ev->type == EV_ABS) {
+        switch (ev->code) {
+
+        case ABS_X: //00
+            e->p.synced |= 0x01;
+            e->p.x = ev->value;
+#ifdef _EVENT_LOGGING
+            LOGI("EV: %s => EV_ABS  ABS_X  %d\n", e->deviceName, ev->value);
+#endif
+            break;
+
+        case ABS_Y: //01
+            e->p.synced |= 0x02;
+            e->p.y = ev->value;
+#ifdef _EVENT_LOGGING
+            LOGI("EV: %s => EV_ABS  ABS_Y  %d\n", e->deviceName, ev->value);
+#endif
+            break;
+
+        case ABS_MT_POSITION: //2a
+            e->mt_p.synced = 0x03;
+            if (ev->value == (1 << 31))
+            {
+                e->mt_p.x = 0;
+                e->mt_p.y = 0;
+                lastWasSynReport = 1;
+            }
+            else
+            {
+                lastWasSynReport = 0;
+                e->mt_p.x = (ev->value & 0x7FFF0000) >> 16;
+                e->mt_p.y = (ev->value & 0xFFFF);
+            }
+            break;
+
+        case ABS_MT_TOUCH_MAJOR: //30
+            if (ev->value == 0)
+            {
+                // We're in a touch release, although some devices will still send positions as well
+                e->mt_p.x = 0;
+                e->mt_p.y = 0;
+                touchReleaseOnNextSynReport = 1;
+            }
+#ifdef _EVENT_LOGGING
+            LOGI("EV: %s => EV_ABS  ABS_MT_TOUCH_MAJOR  %d\n", e->deviceName, ev->value);
+#endif
+            break;
+
+		case ABS_MT_PRESSURE: //3a
+                    if (ev->value == 0)
+            {
+                // We're in a touch release, although some devices will still send positions as well
+                e->mt_p.x = 0;
+                e->mt_p.y = 0;
+                touchReleaseOnNextSynReport = 1;
+            }
+#ifdef _EVENT_LOGGING
+            LOGI("EV: %s => EV_ABS  ABS_MT_PRESSURE  %d\n", e->deviceName, ev->value);
+#endif
+            break;
+
+		case ABS_MT_POSITION_X: //35
+            e->mt_p.synced |= 0x01;
+            e->mt_p.x = ev->value;
+#ifdef _EVENT_LOGGING
+            LOGI("EV: %s => EV_ABS  ABS_MT_POSITION_X  %d\n", e->deviceName, ev->value);
+#endif
+            break;
+
+        case ABS_MT_POSITION_Y: //36
+            e->mt_p.synced |= 0x02;
+            e->mt_p.y = ev->value;
+#ifdef _EVENT_LOGGING
+            LOGI("EV: %s => EV_ABS  ABS_MT_POSITION_Y  %d\n", e->deviceName, ev->value);
+#endif
+            break;
+
+#ifdef _EVENT_LOGGING
+		// All of these items are strictly for logging purposes only. Return 1 because they don't need to be handled.
+        case ABS_MT_TOUCH_MINOR: //31
+            LOGI("EV: %s => EV_ABS ABS_MT_TOUCH_MINOR %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+
+        case ABS_MT_WIDTH_MAJOR: //32
+            LOGI("EV: %s => EV_ABS ABS_MT_WIDTH_MAJOR %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+
+        case ABS_MT_WIDTH_MINOR: //33
+            LOGI("EV: %s => EV_ABS ABS_MT_WIDTH_MINOR %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+
+        case ABS_MT_ORIENTATION: //34
+            LOGI("EV: %s => EV_ABS ABS_MT_ORIENTATION %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+
+		case ABS_MT_TOOL_TYPE: //37
+            LOGI("EV: %s => EV_ABS ABS_MT_TOOL_TYPE %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+
+        case ABS_MT_BLOB_ID: //38
+            LOGI("EV: %s => EV_ABS ABS_MT_BLOB_ID %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+
+        case ABS_MT_TRACKING_ID: //39
+            LOGI("EV: %s => EV_ABS ABS_MT_TRACKING_ID %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+
+		case ABS_MT_DISTANCE: //3b
+            LOGI("EV: %s => EV_ABS ABS_MT_DISTANCE %d\n", e->deviceName, ev->value);
+			return 1;
+            break;
+#endif
+
+        default:
+            // This is an unhandled message, just skip it
+            return 1;
+        }
+
+        if (ev->code != ABS_MT_POSITION)
+        {
+            lastWasSynReport = 0;
+            return 1;
+        }
+    }
+
+    // Check if we should ignore the message
+    if (ev->code != ABS_MT_POSITION && (ev->type != EV_SYN || (ev->code != SYN_REPORT && ev->code != SYN_MT_REPORT)))
+    {
+        lastWasSynReport = 0;
+        return 0;
+    }
+
+#ifdef _EVENT_LOGGING
+    if (ev->type == EV_SYN && ev->code == SYN_REPORT)       LOGI("EV: %s => EV_SYN  SYN_REPORT\n", e->deviceName);
+    if (ev->type == EV_SYN && ev->code == SYN_MT_REPORT)    LOGI("EV: %s => EV_SYN  SYN_MT_REPORT\n", e->deviceName);
+#endif
+
+    // Discard the MT versions
+    if (ev->code == SYN_MT_REPORT)      return 0;
+
+    if (lastWasSynReport == 1 || touchReleaseOnNextSynReport == 1)
+    {
+        // Reset the value
+        touchReleaseOnNextSynReport = 0;
+
+        // We are a finger-up state
+        if (!discard)
+        {
+            // Report the key up
+            ev->type = EV_ABS;
+            ev->code = 0;
+            ev->value = (downX << 16) | downY;
+        }
+        downX = -1;
+        downY = -1;
+        if (discard)
+        {
+            discard = 0;
+            return 1;
+        }
+        return 0;
+    }
+    lastWasSynReport = 1;
+
+    // Retrieve where the x,y position is
+    if (e->p.synced & 0x03)
+    {
+        vk_tp_to_screen(&e->p, &x, &y);
+    }
+    else if (e->mt_p.synced & 0x03)
+    {
+        vk_tp_to_screen(&e->mt_p, &x, &y);
+    }
+    else
+    {
+        // We don't have useful information to convey
+        return 1;
+    }
+
+#ifdef RECOVERY_TOUCHSCREEN_SWAP_XY
+    x ^= y;
+    y ^= x;
+    x ^= y;
+#endif
+#ifdef RECOVERY_TOUCHSCREEN_FLIP_X
+    x = gr_fb_width() - x;
+#endif
+#ifdef RECOVERY_TOUCHSCREEN_FLIP_Y
+    y = gr_fb_height() - y;
+#endif
+
+#ifdef _EVENT_LOGGING
+    LOGI("EV: x: %d  y: %d\n", x, y);
+#endif
+
+    // Clear the current sync states
+    e->p.synced = e->mt_p.synced = 0;
+
+    // If we have nothing useful to report, skip it
+    if (x == -1 || y == -1)     return 1;
+
+    // On first touch, see if we're at a virtual key
+    if (downX == -1)
+    {
+        // Attempt mapping to virtual key
+        for (i = 0; i < e->vk_count; ++i)
+        {
+            int xd = ABS(e->vks[i].centerx - x);
+            int yd = ABS(e->vks[i].centery - y);
+
+            if (xd < e->vks[i].width/2 && yd < e->vks[i].height/2)
+            {
+                ev->type = EV_KEY;
+                ev->code = e->vks[i].scancode;
+                ev->value = 1;
+
+                vibrate(VIBRATOR_TIME_MS);
+
+                // Mark that all further movement until lift is discard, 
+                // and make sure we don't come back into this area
+                discard = 1;
+                downX = 0;
+                return 0;
+            }
+        }
+    }
+
+    // If we were originally a button press, discard this event
+    if (discard)
+    {
+        return 1;
+    }
+
+    // Record where we started the touch for deciding if this is a key or a scroll
+    downX = x;
+    downY = y;
+
+    ev->type = EV_ABS;
+    ev->code = 1;
+    ev->value = (x << 16) | y;
+    return 0;
+}
+
+int ev_get(struct input_event *ev, unsigned dont_wait)
+{
+    int r;
+    unsigned n;
+
+    do {
+        r = poll(ev_fds, ev_count, dont_wait ? 0 : -1);
+
+        if(r > 0) {
+            for(n = 0; n < ev_count; n++) {
+                if(ev_fds[n].revents & POLLIN) {
+                    r = read(ev_fds[n].fd, ev, sizeof(*ev));
+                    if(r == sizeof(*ev)) {
+                        if (!vk_modify(&evs[n], ev))
+                            return 0;
+                    }
+                }
+            }
+        }
+    } while(dont_wait == 0);
+
+    return -1;
+}
+
+int ev_wait(int timeout)
+{
+    return -1;
+}
+
+void ev_dispatch(void)
+{
+    return;
+}
+
+int ev_get_input(int fd, short revents, struct input_event *ev)
+{
+    return -1;
+}